JP2002214438A - Wide view angle polarizing film for liquid crystal display and wide view angle polarizing adhesive film for liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wide view angle polarizing film for liquid crystal display combined with a phase contrast film or a luminance enhancing film and ensuring little unevenness in luminance, to provide a wide view angle polarizing adhesive film for liquid crystal display and to provide a liquid crystal display with the wide view angle polarizing adhesive film stuck to at least one side of a liquid crystal panel. SOLUTION: In the wide view angle polarizing film obtained by layering a polarizing layer on an optical compensating film and a phase contrast film and/or a luminance enhancing film on the polarizing layer, the polarizing layer is layered on the optical compensating film without interposing an adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wide viewing angle polarizing film for liquid crystal display and a wide viewing angle polarizing adhesive film for liquid crystal display. Furthermore, the present invention relates to a liquid crystal display device in which the wide viewing angle polarizing adhesive film for a liquid crystal display is attached to at least one side of a liquid crystal panel.

[0002]

2. Description of the Related Art In a liquid crystal panel of a liquid crystal display, it is indispensable to dispose a polarizing element on a glass substrate forming the outermost surface of the liquid crystal panel due to its image forming method. Is affixed to the outermost surface. As such a polarizing film, generally, as a polarizer, a uniaxially stretched polyvinyl alcohol-based film to which iodine or a dichroic dye is adsorbed is used, and the polarizer is made of a transparent material such as cellulose triacetate. A three-layer structure having both sides protected by a film is used. However, these polarizing films generally have poor heat resistance, so that their use under conditions of 80 ° C. or higher has been limited.

[0003] In addition to a polarizing film, various optical elements have been used on the outermost surface of a liquid crystal panel in order to improve display quality of a display. For example, an optically compensatory polarizing film in which an optically compensatory film is laminated on a polarizing film is used in order to achieve a wide viewing angle with good visibility and to form a liquid crystal display device with less in-plane luminance unevenness. The optical compensation film is, for example, a liquid crystal layer formed by applying a material having liquid crystallinity to a support film such as a cellulose triacetate film, and the liquid crystal layer is formed by tilting a discotic liquid crystal and nematic liquid crystal. It is formed of an inclined member or the like. Such an optical compensation polarizing film has been manufactured by laminating the optical compensation film and the polarizing film via an adhesive. Further, on the polarizing film of the optically compensating polarizing film, a laminated film of a retardation film, a brightness enhancement film, and the like is used in order to improve good visibility and the like. Lamination of the retardation film, the brightness enhancement film, and the like has also been performed via an adhesive.

However, the polarizing film has poor heat resistance, and its thickness is usually 100 μm or more.
When laminating a polarizing film and an optical compensation film via an adhesive, window frame-like unevenness is likely to occur due to stress (strain) generated during heat shrinkage. In particular, when a retardation film, a brightness enhancement film, or the like is further stacked on the polarizing layer and the number of layers is increased, there is a problem that uneven brightness is increased.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a wide viewing angle polarizing film for a liquid crystal display having a combination of a retardation film and a brightness enhancement film, which has less brightness unevenness. It is another object of the present invention to provide a wide-viewing-angle polarizing adhesive film, and further provide a liquid crystal display device in which the wide-viewing-angle polarizing adhesive film is attached to at least one side of a liquid crystal panel.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and found that the above-mentioned object can be achieved by the wide viewing angle polarizing film shown below. Reached.

That is, the present invention provides a wide viewing angle polarizing film comprising a polarizing layer laminated on an optical compensation film, and a retardation film and / or a brightness enhancement film laminated on the polarizing layer. The present invention relates to a wide viewing angle polarizing film for a liquid crystal display, wherein a polarizing layer is directly laminated on an optical compensation film.

In the wide viewing angle polarizing film for liquid crystal display of the present invention, the polarizing layer is directly formed without using an adhesive for laminating the polarizing layer on the optical compensating film. (Especially the support film) can reduce the stress generated by shrinkage, and even when a retardation film or a brightness enhancement film is further combined on the polarizing layer, window frame unevenness hardly occurs and brightness unevenness is small.

In the wide viewing angle polarizing film for a liquid crystal display, it is preferable that the optical compensation film has a supporting film and an optically anisotropic layer made of a material exhibiting liquid crystallinity.

Such an optical compensation film is effective in achieving a wide viewing angle with good visibility and in forming a liquid crystal display device with less in-plane luminance unevenness, and the supporting film forms a polarizing layer. But preferred.

In one embodiment, in the wide viewing angle polarizing film for a liquid crystal display, the polarizing layer is preferably made of a lyotropic solution containing a dichroic dye. In one embodiment, in the wide viewing angle polarizing film for a liquid crystal display, the polarizing layer is made of a liquid crystal polymer solution containing a dichroic dye.

The polarizing layer of the present invention can be formed by coating these polarizing layer forming materials.
The polarizing layer can form a thin-film polarizing layer having good heat resistance. Further, the wide viewing angle polarizing film for a liquid crystal display of the present invention having the polarizing layer has a wide viewing angle with good visibility, moisture resistance,
It is also excellent in durability and lightness.

In the case where a lyotropic solution containing a dichroic dye is used as a polarizing layer forming material,
A polarizing layer can be directly laminated without providing an alignment film on an optical compensation film (especially a support film), and a polarizing layer having good heat resistance can be efficiently formed.

In the wide viewing angle polarizing film for liquid crystal display, the thickness of the polarizing layer is preferably 0.1 to 15 μm. In particular, it is preferable that the thickness of the polarizing layer is 0.2 to 3 μm from the viewpoint of the polarizing characteristics and durability.

In the wide viewing angle polarizing film for a liquid crystal display, it is preferable that a protective layer is provided on the polarizing layer surface. Depending on the specifications of the liquid crystal display device, a hard surface can be formed on the polarizing layer to prevent scratches that impair visibility.

Further, the present invention relates to an optical compensation film,
A method for producing a wide viewing angle polarizing film for a liquid crystal display, comprising: laminating a polarizing layer by coating a polarizing layer forming material; and then laminating a retardation film and / or a brightness enhancement film on the polarizing layer. About.

According to such a method, the thin film is reduced in weight,
A polarizing layer with good heat resistance can be efficiently formed,
Further, by laminating a retardation film or a brightness enhancement film thereon, a wide viewing angle polarizing film for liquid crystal display can be manufactured.

Further, the present invention provides a wide viewing angle polarizing adhesive film for a liquid crystal display, wherein an adhesive layer is provided on a surface of a liquid crystal panel of the wide viewing angle polarizing film for a liquid crystal display to which a glass substrate is adhered. About. Furthermore, the present invention relates to a liquid crystal display device, wherein the wide-viewing-angle polarizing adhesive film for liquid crystal display is attached to at least one side of a liquid crystal panel.

The liquid crystal display device to which the polarizing adhesive film having a wide viewing angle is adhered has a wide viewing angle for good visibility and has little luminance unevenness.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the wide-viewing-angle polarized pressure-sensitive adhesive film of the present invention is, for example, as shown in FIG. Further, a brightness enhancement film (and / or a retardation film) 3 is laminated on the polarizing layer 1. Further, a protective layer 4 can be provided on the polarizing layer 1. The lamination of the brightness enhancement film 3 on the polarizing layer 1 is usually performed by using an adhesive 5
a. On the other hand, an adhesive layer 5b is provided on the optical compensation film 2 which is to be a surface of the liquid crystal panel to which the polarizing adhesive film having a wide viewing angle is attached. Further, a release sheet 6 can be provided on the adhesive layer 5b.

As the optical compensation film 2, for example,
Examples include a birefringent film obtained by uniaxially or biaxially stretching a polymer film, and a liquid crystal alignment film having an optically anisotropic layer made of a liquid crystal material exhibiting birefringence on a support film. The thickness of the optical compensation film 2 is not particularly limited, but is generally about 5 to 100 μm. Among these optical compensation films 2, a liquid crystal alignment film having an optically anisotropic layer 2a on a support film 2b is preferable. In FIG. 1, the polarizing layer 1 is laminated on the support film 2b side of the liquid crystal alignment film (optical compensation film 2), but the polarizing layer 1 is laminated on the liquid crystal alignment film on the optically anisotropic layer 2a side. You can also.

Examples of the polymer material for forming the birefringent film include polyvinyl alcohol, polyvinyl butyral, polymethyl vinyl ether, polyhydroxyethyl acrylate, hydroxyethyl cellulose,
Hydroxypropyl cellulose, methyl cellulose, polycarbonate, polyarylate, polysulfone, polyethylene terephthalate, polyethylene naphthalate,
Polyether sulfone, polyphenylene sulfide,
Polyphenylene oxide, polyallyl sulfone, polymethyl methacrylate, polyamide, polyimide, polyolefin, polyvinyl chloride, cellulose-based polymer, norbornene-based resin or their binary, ternary, various copolymers, graft copolymers, blends Things. These polymer materials become oriented products (stretched films) by stretching or the like. Specific examples include NRF and NRZ (trade names) manufactured by Nitto Denko Corporation.

On the other hand, the support film is formed of a transparent polymer, and an appropriate transparent material can be used. However, a film having excellent transparency, mechanical strength, heat stability, moisture barrier property and the like is preferably used. The thickness of the support film is not particularly limited, but is generally about 5 to 50 μm. Examples of the transparent polymer forming the support film include polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, cellulose polymers such as cellulose diacetate and cellulose triacetate, acrylic polymers such as polymethyl methacrylate, polystyrene and acrylonitrile. Styrene-based polymers such as a styrene copolymer (AS resin), polycarbonate-based polymers, and the like. In addition, polyethylene, polypropylene, polyolefin having a cyclo- or norbornene structure, polyolefin polymers such as ethylene-propylene copolymer, vinyl chloride polymers, amide polymers such as nylon and aromatic polyamide, imide polymers, and sulfone polymers , Polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl alcohol polymer, vinylidene chloride polymer, vinyl butyral polymer, arylate polymer, polyoxymethylene polymer, epoxy polymer, or the above Blends of polymers and the like are also examples of the polymer forming the transparent protective layer. Of these, cellulose triacetate is preferred.

As the liquid crystalline material to be an optically anisotropic layer, the main chain type or side chain in which a conjugated linear atomic group (mesogen) imparting liquid crystal orientation is introduced into the main chain or side chain of the polymer. Various types such as chain type can be mentioned. For example, a discotic liquid crystal polymer, a nematic liquid crystal polymer, and the like can be given. The formation of the optically anisotropic layer using these liquid crystalline polymers is performed, for example, by rubbing the surface of a thin film of polyimide or polyvinyl alcohol, or obliquely depositing silicon oxide on an alignment-treated surface. The heat treatment is performed by developing the above solution. The thickness of the optically anisotropic layer is preferably about 0.1 to 10 μm.

As the optical compensation film, a liquid crystal oriented film in which a liquid crystal polymer is oriented on a support film made of a cellulose triacetate film is particularly preferable. Examples of such a liquid crystal alignment film include WVAO2A (trade name, manufactured by Fuji Photo Film Co., Ltd.).

As a material for forming the polarizing layer 1, a lyotropic liquid crystal solution containing a dichroic dye or a liquid crystalline polymer solution containing a dichroic dye is preferably used. The lyotropic liquid crystal and the liquid crystalline polymer are not particularly limited, and various types are used. A dichroic dye exhibits different absorbances for the incident light in the major axis and the minor axis of the molecule, and the major axis of the molecule is aligned in the predetermined direction according to the uniaxial orientation of the liquid crystal polymer or the like. And selectively absorbs and transmits the vibration component contained in the incident light and converts it into polarized light. As the dichroic dye, for example, a composition prepared so as to have dichroism over the entire visible wavelength range of incident light can be used, and a disazo dichroic dye having a thienothiazole ring, benzothiazole Examples include trisazo dichroic dyes having a ring, specific azo dichroic dyes, and the like. Further, the dichroic dye may have dichroism only for a specific color and convert incident light of a specific color into polarized light. The dichroic dye is preferably used in the above solution at about 1 to 20% by weight.

In forming the polarizing layer 1, a solution in which the dichroic dye and the lyotropic liquid crystal or liquid crystal polymer are dissolved in a solvent is prepared. For example, a lyotropic liquid crystal is used as an aqueous solution, and a liquid crystalline polymer is used as a solution dissolved in an organic solvent.

Next, the polarizing layer forming material (solution) is coated on the optical compensation film 2 by an appropriate coating method such as a casting method or a spin coating method, and heated to form a thin film. The thickness of the thin film is preferably about 0.1 to 15 μm. When the polarizing layer forming material is a lyotropic liquid crystal solution, it is not particularly necessary to subject the optical compensation film 2 to an alignment treatment, and the polarizing layer can be formed directly on the optical compensating film 2. When a liquid crystalline polymer solution is used, the optical compensation film 2
Is pre-aligned. The orientation treatment method is not particularly limited. For example, the orientation treatment is performed by forming a thin film of polyimide, polyvinyl alcohol, or the like, and rubbing the surface.

The structure, composition, preparation method and the like of the suitable dichroic dye or liquid crystal polymer used for the polarizing layer 1 are described in JP-A-8-511109, WO97 / 39380, and Nitto Technical Report Vo135. No. 1, p79 (199
7), and JP-A-11-101964.

On the surface of the polarizing layer 1, a protective layer 4 can be provided. The protective layer 4 has a purpose of forming a hard surface on the polarizing layer and preventing the occurrence of abrasion that hinders visual recognition. The hard material is not particularly limited as long as it does not hinder the optical compensation function. For example, a protective layer 4 made of a transparent film can be provided. As a material for forming the transparent film, the same material as the support film used for the optical compensation film can be used. As the transparent film, cellulose triacetate is preferable. Further, the protective layer 4 can be formed of an appropriate cross-linked resin for forming a transparent hard film. For example, a urethane acrylic or epoxy UV curable resin can be preferably used. In addition, when the protective layer 4 is laminated with a transparent film, it is usually performed via an adhesive (not shown). No adhesive is required.

Examples of the brightness enhancement film include a film using circularly polarized cholesteric liquid crystal.
Specifically, Nitto Denko Corporation's product name PCF350
And Transmax (trade name, manufactured by Merck Co., Ltd.). As an example using linearly polarized light reflected at the interface of the multilayer, there is D-BEF (trade name, manufactured by 3M Corporation).

Examples of the retardation film include a birefringent film and a liquid crystal polymer film obtained by uniaxially or biaxially stretching a polymer material, and the same as the optical compensation film can be used.

The wide-viewing-angle polarizing film can be further provided with appropriate optical layers such as an antiglare sheet, a diffusion sheet, an antireflection film and a protective plate on the surface. , A brightness enhancement film or the like.

As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layers 5a and 5b, various pressure-sensitive adhesives such as a rubber pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a silicone pressure-sensitive adhesive can be exemplified. The weight average molecular weight of the base polymer is preferably about 300,000 to 2.5 million. The same pressure-sensitive adhesive can be used for forming the pressure-sensitive adhesive layers other than the pressure-sensitive adhesive layers 5a and 5b.

As the monomers used for the acrylic polymer which is the base polymer of the acrylic pressure-sensitive adhesive, various alkyl (meth) acrylate / (meth) acrylate means acrylate and / or methacrylate. Has the same meaning. You can use｝. Specific examples of such an alkyl (meth) acrylate include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate,
Examples thereof include 2-ethylhexyl (meth) acrylate, which can be used alone or in combination. Among these, as a monomer unit of the base polymer,
It is preferable to use butyl acrylate in an amount of 30% by weight or more, since the base polymer can be set to exhibit tackiness by adjusting the relaxation modulus of the base polymer.

It is preferable to use a small amount of (meth) acrylic acid instead of part of the alkyl (meth) acrylate in order to impart polarity to the obtained acrylic polymer. Further, glycidyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, N-methylol (meth) acrylamide, or the like may be used in combination as a crosslinkable monomer. Further, if desired, other copolymerizable monomers such as vinyl acetate and styrene can be used together to the extent that the adhesive properties of the acrylic polymer are not impaired.

The acrylic polymer can be produced by various known methods. For example, a radical polymerization method such as a bulk polymerization method, a solution polymerization method, and a suspension polymerization method can be appropriately selected. As the radical polymerization initiator, various known azo-based and peroxide-based initiators can be used. Among the above production methods, a solution polymerization method is preferable, and a polar solvent such as ethyl acetate or toluene is generally used as a solvent for the acrylic polymer.

As the base polymer of the rubber-based pressure-sensitive adhesive,
For example, natural rubber, isoprene rubber, styrene-butadiene rubber, recycled rubber, polyisobutylene rubber,
Further, styrene-isoprene-styrene-based rubber, styrene-butadiene-styrene-based rubber and the like can be mentioned. Examples of the base polymer of the silicone-based pressure-sensitive adhesive include dimethylpolysiloxane and diphenylpolysiloxane.

The pressure-sensitive adhesive preferably contains a crosslinking agent. Examples of the crosslinking agent include a polyisocyanate compound, a polyamine compound, a melamine resin, a urea resin, and an epoxy resin. Further, the pressure-sensitive adhesive, if necessary, a tackifier, a plasticizer, a filler, an antioxidant, an ultraviolet absorber, a silane coupling agent, etc., as appropriate within a range not departing from the object of the present invention. Can also be used.

The formation of the adhesive layer 5b is performed on the surface of the liquid crystal panel of the wide viewing angle polarizing film to which the glass substrate is adhered. In FIG. 1, the surface opposite to the surface on which the polarizing layer 1 of the optical compensation film 2 is laminated is the glass substrate attachment surface. The method for forming the pressure-sensitive adhesive layer 5b is not particularly limited, and includes a method of applying a pressure-sensitive adhesive (solution) to the glass substrate bonding surface of the wide viewing angle polarizing film and drying.
A method of transferring to a wide viewing angle polarizing film using a release sheet 6 provided with an adhesive layer 5b, and the like can be given. The same means as the formation of the adhesive layer 5b can be adopted for the formation of the adhesive layer 5a and other adhesive layers. The thickness of the adhesive layers 5a and 5b (dry film thickness) is not particularly limited, but is preferably about 10 to 40 μm.

The constituent material of the release sheet 6 is as follows.
Examples thereof include paper, synthetic resin films such as polyethylene, polypropylene, and polyethylene terephthalate. The surface of the release sheet 6 may be subjected to a release treatment such as a silicone treatment, a long-chain alkyl treatment, or a fluorine treatment, if necessary, in order to enhance the releasability from the pressure-sensitive adhesive layer 5.

The formation of the liquid crystal display device can be performed according to a conventional method. The wide-viewing-angle polarizing adhesive film can be installed on one side or both sides of the liquid crystal panel. Also,
In the liquid crystal display device, an illumination system using a backlight or a reflector can be appropriately formed.

[0043]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the invention thereto.

Production Example 1 A liquid crystal alignment film (WV film manufactured by Fuji Photo Film Co., Ltd.) using a cellulose triacetate film as a support film was used as an optical compensation film. Next, on the support film side of the optical compensation film, a lyotropic liquid crystal aqueous solution containing a dichroic dye (LCPolarizer;
Optiva Inc. Co., Ltd., solid content: 8.7% by weight) was coated with a wire bar (No. 7), dried at 80 ° C. to form a 1.3 μm thick polarizing layer, and the optical compensation having the polarizing layer A film was obtained. When the thickness of this optical compensation polarizing film was measured, the thickness was 1
10 μm, single transmittance 40%, degree of polarization 90%
Met. The single transmittance and the degree of polarization are values measured by a spectrophotometer DOT-3 manufactured by Murakami Color Research Laboratory.

Production Example 2 As an optical compensation film, a liquid crystal alignment film (WV film manufactured by Fuji Photo Film Co., Ltd.) using a cellulose triacetate film as a support film was used. A polyvinyl alcohol layer was provided on the support film side of the optical compensation film, and the rubbing treatment was further performed.

Separately,

Embedded image , 26 parts by weight of a side-chain type liquid crystal polymer, 0.37 parts by weight of G-202 dye manufactured by Japan Photosensitive Dye Laboratories, 0.73 parts by weight of G-207 dye manufactured by Nippon Kogyo Co., Ltd.
A uniform solution was prepared by mixing 1.46 parts by weight of the dye and 100 parts by weight of tetrataroloethane. The solution is coated on the rubbing treatment layer of the optical compensation film by spin coating, and then heat-treated at 100 ° C. to orient the liquid crystal polymer to form a 1.5 μm thick polarizing layer. An optical compensation film having a layer was obtained.

Further, on the polarizing layer,

Embedded image After applying the urethane acrylic resin represented by the formula, the resin was cured by ultraviolet rays to form a protective layer made of a crosslinked resin having a thickness of 5 μm. When the thickness of this optical compensation polarizing film was measured, the thickness was 115 μm, and the single transmittance was 38.
% And the degree of polarization were 88%.

Examples 1 and 2 25 μm was applied to the optically compensating polarizing film produced in Production Examples 1 and 2.
A brightness enhancement film (manufactured by Nitto Denko Corporation, PCF350) was bonded to each other via an m-th adhesive layer (acrylic adhesive) to obtain a wide viewing angle polarizing film of the present invention.

(Brightness unevenness) As shown in FIG. 2, the optical compensation film side of the wide viewing angle polarizing film A obtained in the example was coated on one side of a glass plate (1.1 mm) C with a 25 μm adhesive layer ( On the other side of the glass plate C, the optical compensation film side of the optical compensation polarizing film B obtained in the production example was placed on the other side of the glass plate C via an acrylic pressure-sensitive adhesive layer 25b with an adhesive layer of 25 μm (acrylic pressure-sensitive adhesive). And bonded together so as to form a cross Nicol.

After storing at 80 ° C. for 24 hours, the transmittance at nine points in the plane shown in FIG. 3 (height 230 mm × width 310 mm) was measured (a luminance meter BM-5, manufactured by Topcon Corporation), and the transmittance was measured. The difference between the maximum value and the minimum value of (%) was determined. Table 1 shows the results.

Comparative Example 1 A polarizing plate (manufactured by Nitto Denko Corporation, thickness: 215 μm) was prepared, and an optical compensation film (WV film manufactured by Fuji Photo Film Co., Ltd.) and a brightness enhancement film (manufactured by Nitto Denko Corporation) were provided on both sides of the polarizing plate. PCF350) with a 25 μm adhesive layer (acrylic adhesive) to obtain a wide viewing angle polarizing film. The luminance unevenness was determined using the obtained wide viewing angle polarizing film. Table 1 shows the results. In addition, as the optical compensation polarizing film B, a film obtained by attaching the optical compensation film to one surface of the polarizing plate was used.

[0052]

[Table 1]

[Brief description of the drawings]

FIG. 1 is a sectional view of a wide-viewing-angle polarizing adhesive film of the present invention.

FIG. 2 is a conceptual diagram of a sample in which luminance unevenness is measured.

FIG. 3 is a transmittance measurement point of a sample for measuring luminance unevenness.

[Description of Signs] 1 polarizing layer 2 optical compensation film 3 brightness enhancement film and / or retardation film 4 protective layer 5 adhesive layer A wide viewing angle polarizing film B optical compensation polarizing film

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Naofumi Mihara 1-1-2 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation F-term (reference) 2H049 BA02 BA03 BA06 BA26 BA30 BA42 BB03 BB43 BB49 BB51 BB52 BC03 BC04 BC22 2H091 FA08X FA08Z FA11X FA11Z FB02 FB04 FC02 KA10 LA16 LA18 LA19

Claims (9)

[Claims] 1. A wide viewing angle polarizing film in which a polarizing layer is laminated on an optical compensation film, and a retardation film and / or a brightness enhancement film are further laminated on the polarizing layer. A wide viewing angle polarizing film for a liquid crystal display, which is directly laminated on a compensation film. 2. The wide viewing angle polarizing film for a liquid crystal display according to claim 1, wherein the optical compensation film has a support film and an optically anisotropic layer made of a material exhibiting liquid crystallinity. 3. The wide viewing angle polarizing film for a liquid crystal display according to claim 1, wherein the polarizing layer is made of a lyotropic solution containing a dichroic dye. 4. The wide viewing angle polarizing film for a liquid crystal display according to claim 1, wherein the polarizing layer is made of a liquid crystal polymer solution containing a dichroic dye. 5. The wide viewing angle polarizing film for a liquid crystal display according to claim 1, wherein the thickness of the polarizing layer is 0.1 to 15 μm. 6. The wide viewing angle polarizing film for a liquid crystal display according to claim 1, further comprising a protective layer on the surface of the polarizing layer. 7. A polarizing layer is laminated by coating a polarizing layer forming material on an optical compensation film, and then a retardation film and / or a brightness enhancement film is laminated on the polarizing layer. 7. The method for producing a wide viewing angle polarizing film for liquid crystal display according to any one of 1 to 6. 8. A liquid crystal display panel having a wide viewing angle polarizing film according to claim 1, wherein an adhesive layer is provided on a surface of the liquid crystal panel to which the glass substrate is adhered. Viewing angle polarized adhesive film. 9. A liquid crystal display device, wherein the wide-viewing-angle polarizing adhesive film for liquid crystal display according to claim 8 is attached to at least one side of a liquid crystal panel.